"Organelle" Essays and Research Papers

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Organelle

 Cell Processes and Body Organisation Nucleus The nucleus is the largest, most prominent organelle, usually spherical and roughly about 10mm in diameter. Every eukaryote cell, with the exception of red blood cells due to their very specific function, has a nucleus. The nucleus' function is to store DNA, it does so in two ways: One is tightly packed and this is called heterochromatin, this isn't read. And the other is loosely packed, named euchromatin. Euchromatin is the actively read...

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Organelle Functions

ANIMAL CELL MODEL ORGANELLE FUNCTIONS Cell membrane: Separating the interior of the cell from the outside environment, the cell wall is selectively permeable, only letting certain things through. It is involved in a variety of cellular processes, such as cell adhesion and cell signalling. Cytoplasm: The fluid that fills the cell, cytoplasm uses its dissolved enzymes to break down larger molecules. The products can then be used by the organelles that are suspended in the cytoplasm. ...

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Cell organelles

Cell Organelles Nucleus Its function is to control the cell's activities and retain the chromosomes.  The nucleus is bound by a double membrane, the nuclear envelope. The nuclear envelope has pores in it to allow the transport of mRNA.  The cytoplasm like material is called nucleoplasm which contains chromatin (coils of DNA and histone proteins), it is chromatin that condenses to form chromosomes during cell division.  Within the nucleus is a small spherical body called the nucleolus which...

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Cells and Organelles

[pic] Cells and Their Organelles The cell is the basic unit of life. The following is a glossary of animal cell terms. All cells are surrounded by a cell membrane. The cell membrane is semipermeable, allowing some substances to pass into the cell and blocking others. It is composed of a double layer of phospholipids and embedded proteins. Color and label the cell membrane tan. Plant cells have an additional layer surrounding them called the cell wall. The cell wall is made of nonliving...

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Cell Organelles

existence of cell organelles within the cell structure, allowing the function of the cell itself to occur; It was necessary to increase magnification by utilising an alternate source radiation (alternate to light).The result was the electron microscope, whereby the short wavelength and negative charge of electrons when supplied with energy allowed for greater focusing with electromagnetism. This method bends the path of the beam in the manner of a lens to light. Cell Organelles and the variation...

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Biology Organelles

vesicles as well. Prokaryotic Cell Eukaryotic Cell The division amongst prokaryotes and eukaryotes is considered to be the most significant difference among groups of organisms. Eukaryotic cells contain membrane-bound organelles, such as the nucleus, while prokaryotic cells do not. Differences in cellular structure of prokaryotes and eukaryotes include the presence of mitochondria and chloroplasts, the cell wall, and the arrangement of chromosomal DNA. Prokaryotes were...

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Organelles of Prokaryote and Eukaryote Cells

Prokaryote Organelles: Nucleoid Region: The region in a prokaryotic cell consisting of a concentrated mass of DNA. (The “nucleus” of a prokaryotic cell) The nucleoid instructs all the organelles on what to do. Ribosome: A cell organelle consisting of RNA and protein organized into two subunits and functioning as the site of protein synthesis in the cytoplasm. The ribosomal subunits are constructed in the nucleolus. (Make proteins from amino acids) The nucleoid controls the ribsomes and specifies...

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Cell Organelles and the Production of a Protein

a) Using a human cell of your choice, describe how organelles work together to make and secrete a protein (LO1. AC 1.1) An epithelial cell in the thyroid gland, called a thyrocyte forms spherical follicles that produce a protein called thyroglobulin. This is a globular protein that has a functional role in metabolism. The protein is used by the thyroid gland to produce thyroid hormones; thyroxine (T4) is an example of one of the hormones created. Thyroxine is formed by iodine binding to tyrosine...

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Chloroplasts Are Organelles Present In

Chloroplasts are organelles present in plant cells and some eukaryotic organisms. Chloroplasts are the most important plastids found in plant cells. It is the structure in a green plant cell in which photosynthesis occurs.  Chloroplast is one of the three types of plastids. The chloroplasts take part in the process of photosynthesis and it is of great biological importance. Animal cells do not have chloroplasts. All green plant take part in the process of photosynthesis which converts energy into...

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Cell Organelle Worksheet

Cell Organelle Worksheet Organelle Nucleus Where found (plant/animal/both) In animals it’s in the center of the cell while in plants it’s found in the cytoplasm. What it does in the cell (functions) It maintains the integrity of the genes and controls the activities of the cell. Something that performs the same function in the “real world” It works like a CPU sending out messages. Organelle Nucleolus Where found (plant/animal/both) For both animal and plants it’s within the nucleus of...

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